/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsExp/Public/Sculpting/MeshVertexPaintBrushOps.h
Soften brush averages colors at any vertices that have split elements, effectively un-splitting them Currently this averaging is done in a single step, ie falloff/etc is ignored, but it could be done more gradually...
class FVertexColorSoftenBrushOp : public [UE::Geometry::FMeshVertexColorBrushOp](API\Plugins\MeshModelingToolsExp\Sculpting\FMeshVertexColorBrushOp)
TArray< int32 >
TempElementIDs